Drop sheet electric current operated interleaver



J. E. JOLLEY Aug. 17, 1954 DROP SHEET ELECTRIC CURRENT OPERATEDINTERLEAVER Filed NOV. 24, 1952 2 Sheets-Sheet l INVENTOR. 75/2725 5JEfl/er fi ir Aug. 17, 1954 J. E. JOLLEY I 2,686,471

DROP SHEET ELECTRIC CURRENT OPERATED INTERLEAVER Filed Nov. 24, 1952 2Sheets-Sheet 2 4/ II I! I INVEN TOR. I Jbmea f. J/ley Patented Aug. 17,1954 UNITED STATES .rA'rENT OFFICE DROP SHEET ELECTRIC CURRENT OPERATEDINTERLEAVER James E. Jolley, Santa Rosa, Calif.

Application November 24, 1952, Serial No. 322,298

2 Claims. 1

My present invention relates to interleavers and more particularly toslip sheet interleavers operated by electrical impulse.

The principal object of my invention is to produce an improved slipsheet interleaver.

Another object is to produce an improved inter" leaver which is actuatedby electrical impulse for use with duplicating machines.

Other objects and novel features comprisin the construction andoperation of my invention will be more apparent as the description ofthe same progresses.

In the drawings illustrating the preferred embodiment of the apparatus:

Fig. 1 is a side elevation of the interleaver coupled to a duplicator,the duplicator being fragmentarily shown in dot-and-dash lines;

Fig. 2 is a fragmentary cross-section taken on the lines 22 of Fig. 1,portions of which are shown in dot-and-dash lines and other portions ofwhich are shown in elevation;

Fig. 3 is a cross-section taken on the line 3-3 of Fig. 2, and

Fig. 4 is a cross-section taken on line 4-4l of Fig. 2.

Fig. 5 is a diagrammatical showing of the various parts together with awiring circuit.

Referring more in detail to the drawings, Ill indicates any type ofduplicator with which a slip sheet interleaver might be used.

The interleaver concerned with the present application comprises a baseIi mounted up against the delivery side of the duplicator, in anysuitable manner. On the base H are mounted at either side supportingmembers 12 secured to the base II by bolts I3 threaded into a top headerbase it. Centrally located in the top header base It is a boss [5 inwhich is secured by set-screw It a post member H which is of circularoutside shape. The lower portion of the post ll is slotted all the Waythrough from side to side, as indicated at it. From the top of the slotD8 to the outer top end of the post i! there is a narrow central slot l9which extends part Way from side to side but terminates at the solidportion 22. In this narrow slot I8 is pivoted at 2i an alternating lever22. The bottom end of the lever 22 is provided with a pin 23 whichextends outwardly from each side of the lever 22. On each side of thelever 22 and pivoted on the pin 23 are a pair of dog members 24 and 25.On the far and near side, the near side being cut away, in the slot l 3,are pins 26. The lever 22 oscillates between the pins 2% riding acrossthe faces of them but the upper 2 portions of the dogs 24 and 25 slidein contact under the bottom surface of the pins 26.

On the post I1 are loosely mounted the interleaves 27. The interleaves27 are provided with alternate side slotted openings such that when thelever 22 is in the position shown in Fig. 2 the dog 24 is up againstsolid material and holds the pack of leaves up. When the lever 22 ispivoted in a reverse direction, the dog 25 passes through the slot ofthe under sheet and engages the next or second sheet from the bottompermitting .the bottommost sheet to drop. This type of interleaver sheetrelease is well known in the art and is in common use. My presentinvention is concerned with the means of operating this drop sheetmechanism. Hereafter, in the specification and in the claims thismechanism will be referred to as a unit by the term alternating dropsheet mechanism.

In interleaver devices, speed is of great importance and in deviceswhich are wholly dependent on mechanical apparatus there is a delay dueto links, leavers and the like which slow down operation.

In my present device the operation of the alternating drop sheetmechanism operates instantaneously with the rotating drum of theduplicator. This is accomplished by electrical impulse from a timing cam30 on the duplicator in which one revolution of the cam 30 representsone complete cycle of the duplicator. The cam 30 operates any simplemicroswitch 38 which izes the interleaver mechanism through anyelectrical current supply source such as 32. Switch 33 may be located onthe interleaver apparatus so that the duplicator can operate withoutoperating the interleaver when so desired.

On the top header base Id of the interleaver, are located two oppositelyopposed solenoids 49 and til, the armature portions 42 and 43 of whichare connected together and to which is pivoted at 413 the upper end ofthe lever 22. The solenoids and 4| are energized alternately by anyelectrical means, as 32.

Mounted on the top header base I4 is a relay comprising a solenoid whichactuates the armature 5|, to the front end of which is pivoted a. dogmember 52, slidably operated through a guide portion 53, and engages thetoothed wheel 54 located on the shaft 55. Also fixed to t e shaft 55 isa special gear wheel 56 having alternating high and low notches 5'! and58 respectively. Also mounted on the header base I4 is a set oftelephone jacks the common lever of.

a which is indicated at 60 having a looped end which engages in the highand low notches of the gear 56. When the looped end of the jack lever 86engages in the low notch 58 the lever 80 contacts with the lower lever10, and when the lever 60 engages with the high notch 51 the lever 60contacts with the lever 80. Each time the solenoid 58 is energized oneof the solenoids 40 or M is energized but always in an alternate manner.This action causes the lever 22 to be tnrust from one side to the otheralternately engaging the dogs 24' and 25 with the sheets 21 permittingthe lower one to drop. This action takes place on each revolution of thecam 30 which corresponds to each rotation of the duplicator drum or oneduplicating cycle.

I wish to point out that the action is of an electrical impulse natureand the electrical current is momentary. It is not necessary for thesolenoids do and H to be energized continuously but only long enough forthe lever to be thrown from one side to the other. The leverage actionbetween the lever 22 and pivot 23 is such that the dogs 20, and 25 arelocked when in the position of dog 24, or in the up position.

The momentary action of the energizing of the solenoids cc and lleliminates all hum or chattering in the solenoids do and 4| as issometimes present where the electrical current is of a sustained nature.The solenoids 40 and 4| are mounted on rubber cushions 90 on the headerbase 14, all of which make the operation of interleaver very silent.

While I have shown and described my invention somewhat in detail yet itis to be understood that I may vary the shape and proportions withinWide latitude without departing from the spirit of the appended claims.

claim as new is:

l. A drop sheet electric current operated interleaver for electricoperated duplicating machines comprising, a base, a header mounted onsaid base, alternating drop sheet mechanism hung from said header andhaving an alternating slip sheet actuating lever pivoted in said header,oppositely opposed solenoids mounted on said header on either side ofthe upper end of said actuating lever, a cam connected to saidduplicator connected with and actuating a microswitch, an electro-magnetcontrolled by an electric switch actuated by said cam, an armatureoperated by said electro-magnet, means connected to said armature foropening and closing an electric switch alternately opening and closingan electric circuit to said solenoids.

2. A drop sheet electric current operated interleaver as set forth inclaim 1 in which said means for operating said solenoids compriseratchet wheel operated by pusher lever pivoted on said Reterences Citedin the file of this patent UNITED STATES PATENTS Number Name Date1,071,310 Golinkin Aug. 26, 1913 1,082,036 McDonnell Dec. 23, 19131,972,070 Jacobsen et a1 Aug. 23, 1934 2,619,034 Bailey Nov. 25, 1952

